Walpole's correspondence and memoirs, in many respects, are highly valuable, and will always be referred to, as throwing much important light on the parliamentary and court transactions of the middle of the eighteenth century. They develope much that was known to no other man, at least to no other with whose writings we are yet acquainted, who has left any record of his information to future times. In this respect, his memoirs are invaluable. It is astonishing how much information there is afloat in the higher political circles, in every age, which is generally known at the time to all who frequent them, which, on that very account, perishes altogether with that generation. No one thinks of committing it to paper any more than they do the stages to London, or the names of the months in the year, or the usual forms of society--because every one knows them. Thus the information, often of essential value to future historians, perishes like the beauty of the women which has adorned the age, unless some garrulous gossip, in his correspondence or memoirs, has been trifling enough for his age, and wise enough for the next, to commit it to paper. Horace Walpole was that garrulous gossip. His correspondence with Sir H. Mann, embracing altogether a period of twenty years, which had previously been published, and his _Memoirs of the Reign of George III._, which have recently appeared, contain an account, tinged no doubt by strong party feelings, but still an account of a very long and important period of English history; and abound not only in curious facts, interesting to the antiquary or the biographer, but contain many important revelations of essential value to the national or general historian of the period.
The praise of these volumes, however, must be taken with much alloy. Horace Walpole was a man of the world and a courtier; he had quick natural parts and much acquired discernment. He was a good scholar, was fond of antiquities, and a passionate admirer of curiosities, which he collected with indefatigable industry, and no small success, from every quarter. He had lived too long in the political and the great world not to have learned its selfishness and appreciated its heartlessness; not to have become acquainted with many political secrets, and seen enough of political baseness. He had considerable powers of observation, and occasionally makes a profound remark, especially on the selfish tendencies and the secret springs of the human heart. His characters are all drawn from the life; and often with great power both of observation and expression. But he had not sufficient steadiness of thought or purpose to achieve any thing considerable, or draw any important conclusions even from the multifarious information of which he was master, or the powers of observation which he possessed. There was nothing grand or generous in his composition. No elevated thoughts, no lofty aspirations, no patriotic resolves, are visible in his writings. Political _insouciance_ was his prevailing habitude of mind; an invincible tendency to "_laissez aller_" the basis of his character. But he did not lie by and observe events, like Metternich and Talleyrand, to become embued with their tendency, and ultimately gain the mastery of them; he let them take their course, and in reality cared very little for the result. He was an epicurean, not a stoic, in politics. His character approaches very nearly to that which common report has assigned to Lord Melbourne. He had strong party attachments, and still stronger party antipathies; he seems to have devoutly swallowed the creed so common to party men of every age, that all those on his side were noble and virtuous, and all those against him, base and selfish. He had much of the wit of Erasmus, but he had also a full share of his aversion to martyrdom. But we shall find abundance of patriotic declamation, cutting invective, and querulous complaint. The misfortune is, that the declamation is always against the triumph of the Tories; the invective against the astuteness of Lord Bute; the complaint against the disunion of the Whig leaders, or the Tory influences at court.